NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 7,804 terms related
to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related
word or phrase in the search box.

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An inhaled form of oxygen and carbon dioxide that has more oxygen than air has. It is being studied in the treatment of cancer and other conditions. It may increase the amount of oxygen in cancer cells, which may make them easier to kill with radiation therapy. Carbogen is a type of radiosensitizing agent.